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From "Istvan Toth (Jira)" <>
Subject [jira] [Updated] (PHOENIX-5772) Streamline the kerberos logic in thin client java code
Date Tue, 25 May 2021 17:32:00 GMT


Istvan Toth updated PHOENIX-5772:
    Release Note: 
The java thin client library has been refactored. It no longer includes Hadoop libraries,
and uses the Java SE Kerberos implementation directly.

The sqlline library has also been removed from the thin client JAR.

The standalone sqlline JAR is now included in the lib/ directory, and is now added to the
classpath by the script.

Some default parameters that were picked up from hbase-site.xml by the java thin client are
now also handled by

> Streamline the kerberos logic in thin client java code
> ------------------------------------------------------
>                 Key: PHOENIX-5772
>                 URL:
>             Project: Phoenix
>          Issue Type: Task
>          Components: queryserver
>            Reporter: Istvan Toth
>            Assignee: Istvan Toth
>            Priority: Major
>             Fix For: queryserver-6.0.0
>          Time Spent: 20m
>  Remaining Estimate: 0h
> The thin client has logic for sqlline-thin that automatically enablies SPNEGO based on
hbase and hadoop settings and whether or not the user is is logged into kerberos.
> According to my analysis, this is the only feature that this code provides. 
> When using the JAR as a JDBC driver, the kerberos code does not apply.
> However, this feature depends on hadoop, which carries the heavy cost bloating the thin
client size and polluting its classpath.
> I propose removing the the feature from the Java code, and potentially implementing it
in the sqlline-thin startup script.
> This would cut the JAR size by ~80%, and solve a lot of classpath problems for the users
of the JDBC driver.
> This is based on discussion with [~elserj] during the review of PHOENIX-5761

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